/*
 * Copyright (c) 2020, 2024, Huawei Technologies Co., Ltd. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
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 */

#ifndef SHARE_JBOLT_JBOLTUTILS_HPP
#define SHARE_JBOLT_JBOLTUTILS_HPP

#include "memory/allocation.hpp"
#include "oops/metadata.hpp"
#include "runtime/thread.hpp"
#include "utilities/growableArray.hpp"

class JBoltUtils : public AllStatic {
public:
  /**
  * Keep the metadata alive.
  *
  * @see KeepAliveRegistrar
  * @see methodHandle
  */
  class MetaDataKeepAliveMark : public StackObj {
  private:
    Thread* _thread;
    GrowableArray<Metadata*> _kept;

  public:
    MetaDataKeepAliveMark(Thread* thread);
    ~MetaDataKeepAliveMark();

    void add(Metadata* md);

    const GrowableArray<Metadata*>& kept() { return _kept; }
  };
};

#endif // SHARE_JBOLT_JBOLTUTILS_HPP
